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cotyledon

XDict

n. 子叶,瓦松属

PyDict

子叶,瓦松属

WordNet (r) 3.0 (2006) (WordNet)

cotyledon
n 1: embryonic leaf in seed-bearing plants [synonym: {cotyledon},
{seed leaf}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Cotyledon \Cot`y*le"don\ (k?t`?-l?"d?n), n. [Gr.??? a cupshaped
hollow, fr. ???. See {Cotyle}.]
1. (Anat.) One of the patches of villi found in some forms of
placenta.
[1913 Webster]

2. (Bot.) A leaf borne by the caulicle or radicle of an
embryo; a seed leaf.
[1913 Webster]

Note: Many plants, as the bean and the maple, have two
cotyledons, the grasses only one, and pines have
several. In one African plant ({Welwitschia}) the
cotyledons are permanent and grow to immense
proportions.
[1913 Webster]

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Cotyledon - Wikipedia
A cotyledon ( ˌ k ɒ t ɪ ˈ l iː d ən KOT-ill-EE-dən; from Latin cotyledon; [1] from κοτυληδών (kotulēdṓn) "a cavity, small cup, any cup-shaped hollow", [2] gen κοτυληδόνος (kotulēdónos), from κοτύλη ' cup, bowl ') is a "seed leaf" – a significant part of the embryo within the seed of a plant – and is
Cotyledon | Definition, Description, Function, Examples . . .
Cotyledon, seed leaf within the embryo of a seed Cotyledons help supply the nutrition an embryo needs to germinate and become established as a photosynthetic seedling and may themselves be a source of nutritional reserves or may aid the embryo in metabolizing nutrition stored elsewhere in the seed
Cotyledon | Definition, Function Types - Lesson | Study. com
What Is a Cotyledon? A cotyledon is part of the embryo within the seed of a plant Often when the seed germinates, or begins to grow, the cotyledon may become the first leaves of the seedling
Cotyledons Explained: Your Seedling’s First Leaves
Learn about cotyledon, the vital first leaves of a seedling, and understand their role in photosynthesis and plant development
Cotyledon Plant Information - Learn About Cotyledons On . . .
What is a cotyledon? It is the embryonic part of a seed which stores fuel for further growth Some cotyledons are seed leaves which fall off the plant within a few days These cotyledons on plants are photosynthetic, but there are also hypogeal cotyledons which remain under the soil
Cotyledon - Biology Simple
In botany, a cotyledon is defined as the embryonic leaf within the seed of a plant It is responsible for providing essential nutrients and energy to the developing plant until it can begin producing its own food through photosynthesis

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